I've never understood why Apple ultimately decided not to implement ZFS after apparently making all the preparations to do so. It's arguably the most robust filesystem currently in existence for single-drive implementations and, for most purposes, it makes hardware RAID controllers unnecessary in a multi-drive environment.

I've never understood why Apple ultimately decided not to implement ZFS after apparently making all the preparations to do so. It's arguably the most robust filesystem currently in existence for single-drive implementations and, for most purposes, it makes hardware RAID controllers unnecessary in a multi-drive environment.

It looks like licensing might have been a problem, at least according to this article.